/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.android.tools.idea.common.util

import com.android.tools.rendering.RenderProblem
import java.io.PrintWriter
import java.io.StringWriter

/** Converts a [Throwable] to a string for log printing. */
private fun Throwable?.asLogString(): String =
  if (this == null) {
    ""
  } else {
    val stringWriter = StringWriter()
    printStackTrace(PrintWriter(stringWriter))
    "\n\nthrowable: ${stringWriter}"
  }

/** Converts a [RenderProblem] to a string for log printing. */
fun List<RenderProblem>.asLogString(): String =
  joinToString("\n\n") {
    """${it.html}
      | ${it.throwable?.asLogString()}
    """
      .trimMargin()
  }
